P2A3D
O2 Sensor Negative Current Control Circuit High Bank 1 Sensor 3
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)
Symptoms
- Increased fuel consumption
- Check Engine Light Is On
- Reduced engine power
- Unstable engine idling
- Increased emissions of harmful substances
Causes
- Oxygen sensor malfunction
- Damaged wiring or poor connection
- Short circuit in control circuit
- Engine control module (ECU) malfunction
- Circuit Grounding Problems
How to Fix
- Check the integrity of wiring and connections
- Check the resistance and voltage in the sensor circuit
- Replace the oxygen sensor if necessary
- Check and replace engine control module (ECU) if necessary
- Make sure there is no short circuit in the circuit
Related codes
Error P2A3D by Vehicle Brand
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